| ID | 5637 |
| Thumbnail | |
| Cat Number | 3620 |
| Variety | |
| Description | Flag |
| Series | Flag - First Class/37¢ |
| Denomination | "FIRST-CLASS" (37¢) |
| Color | Multicolored |
| Separation Method | PF |
| Extent Perf Die Cut | 4 |
| HPerf | 11.25 |
| VPerf | 11.00 |
| Tagging | Overall |
| Tagging Color | |
| Paper Type | |
| Adhesive | SA |
| Gum Type | n/a |
| Format | S |
| EFO | |
| Watermark | unw. |
| Specialfeatures | Small date; microprint "USA" |
| Printing Type | Lithographed |
| Stamp Date | 2002 |
| Printer Engraver | APU |
| Issue Year | 2002 |
| Image1 | |
| Issue Date | 6/7/2002 |
| Quantity Issued | |
| Visible | Yes |